Proceedings of the 2016 4th International Conference on Machinery, Materials and Information Technology Applications

A Modified Method for Acoustic Pulse Extraction under Noisy Environments

Authors
Menghua Cao, Zhiqiang Sun, Erling Gong, Hongwei Xie
Corresponding Author
Menghua Cao
Available Online January 2017.
DOI
https://doi.org/10.2991/icmmita-16.2016.190How to use a DOI?
Keywords
Acoustic Pulse; Spectral Subtraction; Frequency Band Variance; Cross-correlation
Abstract
This paper addresses a modified method of extracting acoustic pulse based on the multi-band spectral subtraction and the frequency band variance. In this method, the acoustic pulse is detected, the noise spectrum is estimated and subtracted from the acoustic pulse spectrum. By abandoning the late reverberation and decayed part of acoustic pulse, effective part of signal is obtained. Using this method, signal-to-noise ratio (SNR) is considerably improved and cross-correlation between different channels can be well optimized.
Open Access
This is an open access article distributed under the CC BY-NC license.

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Cite this article

TY  - CONF
AU  - Menghua Cao
AU  - Zhiqiang Sun
AU  - Erling Gong
AU  - Hongwei Xie
PY  - 2017/01
DA  - 2017/01
TI  - A Modified Method for Acoustic Pulse Extraction under Noisy Environments
BT  - Proceedings of the 2016 4th International Conference on Machinery, Materials and Information Technology Applications
PB  - Atlantis Press
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmmita-16.2016.190
DO  - https://doi.org/10.2991/icmmita-16.2016.190
ID  - Cao2017/01
ER  -